The plug-in is developed mainly for B&W images but also works well with some color images after using this little Lunacore trick:

- open image that needs to be fixed
- duplicate image (image/duplicate)
- apply FT filter to the original image
- drag/drop the duplicate with the mouse (while holding down the shift key) to the current document
- use filter/noise/median to blur this color image until pattern disappears
- set blending mode of this layer to color